Improvement in base-burning stoves



A. HATHAWAY. Base-Burning Stoves.-

-Paten tedJune-1.6,1874.

(W m w W494 fi \Wwwssms I "UNITED STATES PATENT Erica,

ALFRED HATHAWAY, OF FREETOWN, MASSACHUSETTS.

IMPROVEMENT IN BASE-BURNING STOVES.

Specification forming part of Letters Patent No. l 5 [,975, dated J une 16, 1874; application filed May 18, 1874.

To all whom it may concern:

Be it known that I, ALFRED HATHAWAY, of Freetown, in the county of Bristol, State of Massachusetts, have invented a certain new and useful Improvement in Base Burning Stoves, of which the following is a description sufficiently fu1l,clear, and exact to enable any person skilled in the art or science to which my invention appertains to make and use the same, reference being had to the accompanying drawing forming a part of this specification, in which- Figure 1 is a vertical section of my improved stove. Fig. 2 is a plan, showing the arrange ment of the circular rack and pinions. Fig. 3 is a plan of the cap for covering the rack and pinions. Fig. 4 is an isometrical perspective View of the'fire-pot and airheating chamber. Fig. 5 is a sectional View, showing the construction and arrangement of the adjustable lugs. Fig. 6 is a plan of the bottom.

Like letters of reference indicate corresponding parts in the different figures of the drawlng.

My invention relates to that class of stoves known as base-burning, which are provided with an adjustable fuel-magazine; and con sists in a novel arrangement and construction of the parts, as hereinafter more fully set forth and claimed, by which a simpler and more ef fective stove of this character is produced than is now in common use.

In Fig. 1,A is the body or case of the stove; B, the fire-pot; O, the air-chamber; D, the ash-pan; E, the fuel-magazine; F, the cover; G, the vertical shafts; M, the cap; L, the circular rack; J, the pinions; I, the lugs; T, the upper smoke-pipe; R, the lower smoke-pipe;

P, the grate; U, the hot-air pipes; IV, the

diving smoke-fines; H, the lug-rods; and V V, the ears loy which the case A is attached to the base Q. The case A is a cylindrical drum formed of sheet metal, open at the lower end, and provided at the upper end with the head X, through which head there is an aperture, Z, Fig. 2, for the magazine E, and in which the vertical shafts G are disposed. The pinions J are arranged upon the shafts in such a manner as to rest upon the head X when in position, the shafts projecting upwardly through the pinions to form the journals Y,

Fig. 5. The cap M is provided with apertures for the journals Y, and also with a central aperture for the magazine E, corresponding with the aperture Z, and is attached to the head X by the screws n, being kept from contact With the pinions J and rack L by means of the rests N, Fig. 2, which rests are attached to the head X, and also act as guides to keep the rack in position with respect to the pinions. The shafts Gr are hollow, being interiorly threaded to receive the threaded lug-rods H, to the lower ends of which rods are attached the lugs I, Fig. 5. These lugs have vertical slots m, through which the studs 1, attached to the exterior of the magazine E, project. The firepot B, Fig. 4, is hollow, being so constructed as to have an air-chamber, G, which chamber is provided with the draft-aliertures 1919, Fig. 6, opening through the bottom of the stove, and also with hot-air pipes U U, Fig. 4:, extending outwardly through the case A, Fig. l. The circular rack L extends outwardly beyond the case A, and has teeth projecting inwardly, and rests loosely upon the head X, the teeih of the rack engaging with the pinions J in such a manner that when the rack is turned or moved in a horizontal plane to the right or left the shafts G will be rota-ted, and the rods H, with their lugs I, raised or depressed accordingly. The base Q, Fig. 4, forms a smokechamber around the lower part of the fire-pot B, into which thediving-tlues WV open.

From the foregoing the nature and operation of my invention will be readily understood by all conversant with such matters.

The fuel with which the stove is supplied is deposited within the magazine E by raising the cover F, which is hinged to the cap M at m, Fig. l, and falls into the fire-pot B, upon the grate P. The diameter of the magazine being much less than that of the fire-pot, into which it extends, coal is delivered in the center of the fire-pot, falling down as it is consumed. The object of the rack L is to raise and lower the magazine E, and to adjust it in any required position, the slotted lugs I permitting the magazine to fall a certain distance of itself as the coal is consumed.

In all stoves of this character heretofore constructed, with which I am acquainted, no provision has been made for raising and low ering the magazine, and maintaining it at the same time in a perfectly-vertical position with respect to the fire-pot; neither have the pots in stoves of this description been constructed and arranged so as to permit the magazine to fall of itself as the coal is consumed, which latter is very important, as where the stove is not so constructed, when the coal burns away in the fire-pot, a larger amount will be delivered from the magazine than is required, and consequently there will be a waste of fuel, which will not occur where the magazine is so constructed and arranged as to fall with the coal as it is consumed, as in myimproved stove.

It is important in stoves of this description that the coal should be delivered in the center of the fire-pot, and in small quantities, as required; but, when the magazine is not so arranged as to fall of itself when the coal burns away, a larger quantity will be delivered from the magazine than is necessary to replenish that consumed, and there will be a corresponding waste of fuel.

By having the fire-pot B constructed with the air-chamber O, as described, the air which passes through the apertures 11 becomes rapidly heated, and may be conveyed through the pipes U, and utilized for heating distant apartments, thus rendering the stove available as a hot-air furnace.

The upper smoke-pipe T should be provided with a damper arranged in such a manner that it may be closed when desired, and thus turn all of the smoke and products of combustion downwardly, through the diving-fines \V, into the base Q, from whence they will pass, through the pipe It, into the chimney, thus heating the air in the chamber 0 more rapidly than when the smoke and gases are allowed to pass directly from the fire pot through the pipe T.

It will be obvious that any number of pinions may be employed, also, that the vertical shafts G may be of any required length, and that the lugs I may be attached to the maga zine E, and unprovided with the slots m,without departing entirely from the spirit of my invention.

In Letters Patent No.143,693, granted to me on the 14th day of October, 1873, a base-burning stove is described, having a centrally-arranged magazine which is rendered vertically adjustable by means of an annular flange and thumb-screws; but the screws are not so arranged as to be operated conjointly to raise and lower the magazine, and maintain it in a perfectly vertical position during the operation. Neither is the magazine constructed and arranged in such a manner as to fall of itself within the stove as coal is consumed in the fire-pot, and there is no air-chamber around the fire-pot to render the stove available as a hot air furnace. I therefore do not herein claim anything secured to me by said Letters Patent, or anything shown or described therein, and not so secured, when in and of itself considered 5 but \Vhat I claim is-- 1. In a base-burning store, the magazine E, provided with the pinions J, rack L, shafts G, threaded lug-rods II, and lugs I, combined to operate substantially as and for the purpose specified.

2. In combination with the magazine E, the slotted lugs I, studs 1', rods H, and shafts G, arranged to operate substantially as and for the purpose set forth.

3. In combination with the head X, pinions J, shafts G, and rack L, the cap M, arranged substantially as described.

ALFRED IIATHAWVAY.

\Vitnesses Tires. E. NIoHoLs, 1?. IV. EASTMAN. 

